This class provides default implementations for the JFC Action
interface. Standard behaviors like the get and set methods for
Action object properties (icon, text, and enabled) are defined
here. The developer need only subclass this abstract class and
define the actionPerformed method.

Warning:
Serialized objects of this class will not be compatible with
future Swing releases. The current serialization support is
appropriate for short term storage or RMI between applications running
the same version of Swing. As of 1.4, support for long term storage
of all JavaBeansTM
has been added to the java.beans package.
Please see XMLEncoder.

addPropertyChangeListener

Adds a PropertyChangeListener to the listener list.
The listener is registered for all properties.

A PropertyChangeEvent will get fired in response to setting
a bound property, e.g. setFont, setBackground,
or setForeground.
Note that if the current component is inheriting its foreground,
background, or font from its container, then no event will be
fired in response to a change in the inherited property.

CloneNotSupportedException - if the object's class does not
support the Cloneable interface. Subclasses
that override the clone method can also
throw this exception to indicate that an instance cannot
be cloned.